Air-compressor.



PATENTED MAY 7, 1907. R. BERRENBERG & A. S. DRISKO. I

AIR COMPRESSOR.

APPLICATION FILED MAB..16,1905.

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5L4? y Q-WQILM No. 852,817. PATENTED MAY 7, 1907. v

R. BERRBNBERGK; A. s. DRISKO.

AIR COMPRESSOR.

APPLICATION FILED MAE. 16,1905.

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UNITED, STATES PATENT O FIC REIVNOLD BERRENBERG AND ALONZO s. DRISKO, or BOSTON,

MASSACHUSETTS.

AIR-COMPRESSOR.

To all whom it may concern.-

Be it known that we, REINOLD BERREN- BERG and Ammo S.,DRISKO, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Air-Compressors, of which the fol lowing,taken in connection with the ace ompanying drawings, is a specification.

Our invention relates to that class of rotary pumps thatis used for compressing'air' and gases, and consists in certain mechanical devices which may be best understood by reference to the drawings and description, the object being to make a durable and rapid working compressor. This object I-attain by the mechanism shown in the accompanying drawings, in which Figure 1 is a view of one of my pumps, partly in side elevation and partly in vertical section. Fig. 2 is a longitudinal vertical section. Fig. 3 shows a part of the interior of the casing. Fig. 4 shows details including one of the pistons and parts of the piston guiding rings.

In the drawings A and A re resent the sides of the case and B B the cy indrical or drum part of the case within which the working parts operate.

C is an annular waterchamber in which water circulates for the purpose of keeping the machine cool.

The rotatin piston carrier-E is a solid cylinder except that it has recesses at each end for allowing room for the piston-guiding rings R and E. This .rotating 1piston-carrier is mounted upon the journa to which it is keyed, and rotates freely with the said shaft. The piston-chamber is cylindrical above the ports G and G and coincides with the periphery of the iston-carrler and 1s concentric with the journal D. The lower part of the piston-chamber is also cylindrical, but it extends below the piston-carrier, leaving a crescent-shaped space, P,see Figs. 1 and 2in which the projecting ends F F F of the pistons F bear and act as pistons. The

istons F work freely in radial grooves made in the piston-carrier, as shown in Fig. 1. The pistons FF are compounded or laminated as shown, that is, each piston is com osed of a number of plates, each free to s ide and adapt itself to the interior of the pistonchamber so that there is much more certainty of having air-tight joints between the Specification of Letters Patent/ Application filed March 16, 1906. Serial No. 250,468.

Patented May 7, 1907.

interior of the piston-chamber walls and the working ends 0 the pistons FF.

The interior edges of the pistons FF have projections f, f, see Fig. 2. When the carrier inits rotation takes the pistons into their working positions, then the piston-controlling rings R, R come in contact with the projections f, f, on the pistons and force them outward, thereby causing their outward ends to come in contact with the interior wall of the piston chamber, see Fig. 1 F F F andthus oause them to make'tight joints with the said walls. The rings R B have grooves, 1', made in them for the reception of anti-friction balls. These balls lie between the outer rings R and the inner rings R and thus prevent friction. The inner rings are free except that they are controlled by the eccentric studs N; these studs are made with stems N eccentric with them so that by turning the stems the studs can be adjusted so as to cause the rings to assume the desired osition for controlling the piston F and thus orcing them outward and against the wall of the piston-chamber, as. shown in Figs. 1 and 2. The outer and inner rings with their anti-friction balls and one of the laminated pistons F are shown in detail in Fig. 4.

The interior of the wall of the upper part of the piston cylinder is shown in Fi 3 and has spiral inwardly projecting ribs 1 which serve to clean off the working ends of the piston F and free them from any grit or other substance that may collect upon them and which would otherwise interfere with the perfect working of the device.

Although wehave called this instrument an air-compressor, it may be used for a waterpump or meter and, with perhaps slight alteration, anen ine.

The water jac et space C has-inlet and outlet openings C and C which are conpiston-chamber provided with inlet and outlet orts, a rotating piston-carrier having lamlnated pistons, and having recesses at each end; piston-controlling rings located in said recesses; anti-friction balls upon which the said piston-controlling rings run; inner rin s constructed for the said anti-friction balls to run upon; and adjustable eccentric studs constructed tohold said inner rings in their desired position; substantially as and for the purpose set forth.

2. A rotary air-compressor, comprising a piston-chamber provided with inlet and outlet ports and having spiral inwardly projecting ribs on its inner periphery; a rotating piston-carrier and pistons, said rotating piston-carrier having recesses at each end; piston-controllin rings located in said recesses; anti-friction balls upon which said piston-controllin rings run; inner rings constructed for t e said anti-friction balls to run upon; and adjustable eccentric studs constructed to hold said inner rings in their desired position; substantially as and for the purpose set forth.

In testimony whereof, We have signed our names to this specification in the presence of two subscribing Witnesses, on this tenth day of March A. D. 1905.

REINOLD BERRENBERG. ALONZO S. DRISKO.

Witnesses:

FRANK G. PARKER, WILLIAM EDsoN. 

